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Finding the Fourth Proportional to 638,361.30, 957,770.68 and 273,469.85

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Solution

The fourth proportional to 638,361.30, 957,770.68 and 273,469.85 is: 410,302.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,361.30 : 957,770.68 = 273,469.85 : x
  2. Step 2: Convert to fraction form
    638,361.30/957,770.68 = 273,469.85/x
  3. Step 3: Cross multiply
    638,361.30x = 957,770.68 × 273,469.85
  4. Step 4: Simplify right side
    638,361.30x = 261,921,400,132.14
  5. Step 5: Solve for x
    x = 261,921,400,132.14/638,361.30
  6. Step 6: Final answer
    x = 410,302.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.